981480811 has 2 divisors, whose sum is σ = 981480812. Its totient is φ = 981480810.

The previous prime is 981480809. The next prime is 981480821. The reversal of 981480811 is 118084189.

It is a weak prime.

It is an emirp because it is prime and its reverse (118084189) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 981480811 - 2¹ = 981480809 is a prime.

It is a super-2 number, since 2×981480811² = 1926609164722435442, which contains 22 as substring.

Together with 981480809, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (981480821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490740405 + 490740406.

It is an arithmetic number, because the mean of its divisors is an integer number (490740406).

Almost surely, 2^981480811 is an apocalyptic number.

981480811 is a deficient number, since it is larger than the sum of its proper divisors (1).

981480811 is an equidigital number, since it uses as much as digits as its factorization.

981480811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 40.

The square root of 981480811 is about 31328.5941433700. The cubic root of 981480811 is about 993.7884333276.

The spelling of 981480811 in words is "nine hundred eighty-one million, four hundred eighty thousand, eight hundred eleven".